大型原油储罐的清罐检验需要花费大量的人力、物力和财力，且检验周期较长，甚至还会带来其他安全和环保问题。因此，在线检验技术在大型原油储罐检验中的应用越来越广泛。储罐潜在的失效模式主要有腐蚀、破裂、失稳等，对不同的失效模式开展了有针对性的在线检测，检测数据可为储罐整体基于风险的检验（RBI）提供科学的数据支撑，为储罐后期管理及维护提供相应的策略。

The inspection of the open tank for large crude oil tanks requires a lot of manpower, material and financial resources, and it also covers a long period. The inspection hence brings a lot of safety and environmental problems. Therefore, on-line inspection technology is applied more and more widely in large oil tank inspection. Potential failure modes of storage tanks include corrosion, rupture and instability, and targeted on-line detection methods are developed for different failure modes. The test data can provide scientific data support for the RBI of the tank as a whole, and provide corresponding strategies for the later management and maintenance of the tank.